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Proceedings Paper

Temperature gradients and vibration measurements obtained in a composite material by a multichannel optical fiber interferometer
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Paper Abstract

We present the results of our experiment for the characterization of mechanical vibrations and temperature gradients of a carbon fiber board. The sensor system is a multichannel interferometer with sensing optical fibers embedded onto the plate under test. We investigate the simultaneous measurement of dynamic gradients of temperature and propagation of vibrations applying a synchronous sampling at the frequency of vibrations. The signals resulting from this technique provides the information of the optical phase due to temperature changes and the relative amplitude of vibrations. We measure the optical phase difference between four separated fiber-optic channels relative to a common reference path. The results are the calibration of the sensor and the spatial propagation of vibrations and temperature gradient.

Paper Details

Date Published: 24 August 2000
PDF: 8 pages
Proc. SPIE 4073, Fifth European Conference on Smart Structures and Materials, (24 August 2000); doi: 10.1117/12.396413
Show Author Affiliations
Jose Antonio Garcia Souto, Univ. Carlos III de Madrid (Spain)
Horacio Lamela, Univ. Carlos III de Madrid (Spain)

Published in SPIE Proceedings Vol. 4073:
Fifth European Conference on Smart Structures and Materials
Pierre Francois Gobin; Clifford M. Friend, Editor(s)

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